Demountable rim.



J. C. COLE.

DEMOUNTABLB RIM.

APPLIUATION FILED DB0. 27, 1910.

Patented Oct. 8, 1912.

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WI T NE SSE S.-

ATTORNEY.

.UNITED STATES" PATEN T UFFICE.

JOHN' CLARENCE COLE, OF CHICOPEE FALLS, MASSACHUSETTS, ASSIGNOR TO FISKRUBBER COMPAIW" OF CHICOPEE FALLS, MASSACHUSETTS, A CORPORATION.

DEMOUNTABLE RIM.

Specification of Letters Patent.

Patented Oct. 8, 1912.

To all 'whom 'it may concern:

Be it known that I, J oI-IN CLARENCE COLE, a citizen of the UnitedStates of America, residing at Chicopee Falls, in the county of Hampdenand State of Massachusetts, have invented new and useful Improvements inDemountable Rims, of which the following is a specification.

This invention relates to the construction of metal rims for resilientt-ires and particularly to demountable rims for cleneher and analogoustires in which the bead on the base of the tire engages the sides of achannel in the rim. When this type of tires is made in the large sizes,especially, the base and body of the tire are very rigid y and the outerdiameter of the rim, measured from the upturned edges thereof, isgreater than the internal diameter of the tire, and the latter, beingrelatively inelastic, is with difiiculty passed over the edge of the rimand thus seated in the channel in the latter, adapted to receive saidbase. To overcome this, the rims have heretofore been dividedcireumferentially and the two parts fitted to the beaded sldes ot' thebase and locked together by a suitable locking device.

'lhe object of the present invention is to provide a circumferentiallyldivided demountable rim and locking mea-'nsto secure the two partstogether, which shall be as light as possible as is consistent withstrength, and in which the locking device is simple and efficient, andso constructed that when the rim is provided with its tire and thelatter is inflated 'for use, the pressure of the base against the rimwill serve to prevent movement of the locking device, whereby the twoparts of the rim might be blown apart by the air pressure in the tire, aresult which might be attended with serious results. This automaticlocking of the lock ing device against easy displacement makes this typeof'rim one which can be safely handled with an inflated tire mountedthereon, and one which can be safely carried on a vehicle on any desiredplace.

The invention is clearly illustrated in the accompanying drawings, andfully described in the following specification and pointed out in theclaims appended thereto.

In these draWings,-Figure 1 is a plan view of a portion of a rimembodying the invention, showing the two parts of the rim in operativerelation one to the other, the locking device being shown partly in fulllines and partly in dotted lines. Fig. 2 shows-also in plan view the twoparts of the rim shown in separated relation. Fig. 3 is a crosssectional view of the rim on line 3 3, Fig. 1, and shows also a tire inplace on said rim. Fig. t is a longitudinal section ot' the rim and aportion of a tire, the line of the section being taken on the line ofpartition between the two parts of the rim. This View shows the lockingdevice in position to lock the two parts of the rim together. Fig. 5 isalongitudinal section like Fig. et in all respects except that thelocking device is shown in the position it occupies when the rim-partsare unlocked. Figs. 4 and 5 are on a somewhat smaller scale than Figs. land 2.

Referring tothe drawings, ft indicates one part oit theeil-cumterentially divided rim,

and 7) the other part thereof, the partition line being preterably solocated as to divide the rim into substantially two equal parts. On theparts a. and b, the metal strips (Z and e are respectively riveted, asat f on the part a, and g on the part b. Preferably, the 'stri ps al,for example, are Iliade longer than the strip e so that there might be,for instance, four relatively long strips d and four relatively shortones f'. Each end of each ot the strips o7 and e flares outwardly -fromits respective parts a and b of the rim, these angularly disposed endsbeing straight and are indicated by h, the angles being the same on'eaehstrip. By referring to Fig. 1, it will be seen that when these two rimparts a and are assembled in operative relation, the strips (l and edovetail together, and, to permit this assemblage at those points aroundthe circumference of the rim where the strips on one rim part enterbetween t-he ends of the strips on the other part, one end of one of thestrips is cut oil-` and a member is hinged to that endof the strip fromwhich a piece is cut, and is adapted to swing down toward the axis ot'the rim, whereby an opening is provided wide enough to permit thedovetail strip on one rim part to enter between the dovetail ends ofthestrips on the other. This hinged part of the strip 4is indicated by m,and it is hingedl to' the end of the strip by a pin o in such relationthereto that when itis swung g up ush with said strip, as shown'in Fig.l,

the inclined edge thereof will t closely against. the adjacent inclinededge of the strip on the other part ofthe rim, thus lockingfthe two rimparts together. This vhinge'dpa'rt m of the strip ai 1s made .with anofset rectangular-extension p which tits in alike recess cut out of theend of the strip, and the pin o, on which the part m swings,passesthr'ough the end of the strip and through this rectangularextension p.

vNow to provide means for holding the hinged part m' againstdisplacement beforevit. f is mounted on a'wheel, the rectangular eXtenrsionfm of said part is made a little higher than the rest'of said part,as shown at inl-g enough' .higher infact to extend through an opening gin the rim part as seen most -clearly in Figs. 1 to4 inclusive, andproject slightly beyond the surface of said rimpart. This 'opening islocatedjin that part of the rim on which the base of the tire is seated,and `a little one side of the center line of therim ywhereby-this raisedportion m1 of the hinge will come under one of the beads of the base, asseen in Fig. 3. It will be observed that the surface of this part m1 isflattened where the base of the tire bears thereon, .and that it islocated directly overy the pin o. Therefore, when the tire is iniated,the air pressure therein will force the base of the tire so stronglyagainst this art m1 as to hold it immovably in place ush with the stripto which it is hinlged, thus permitting the inflated tire to be 'andledwith entire safety. When the tire is deated,the hinged part mof .thestructure ma bereadily swung down to the position s own in Fig. 5 andthus permit the easy separation of the rimparts. When the Atlre 1s in adeflated condition, the base thereof will bear with more .or'le'ss'pressure against' the rim and thus act as a sort of spring detent forthe hinged part'm, whether-. it islin the position shown in 'Fig., l orFig. 5. For `convenience in swin'gmgpthe hinged part down to theunlocking position, 'a hole fr may, if desired, be'drilled in the underside thereof lto permitnthe entrance of a tool to' pry said part out ofoperative' position.,

As stated above the structure herein described is for usl/ey'iJrimarilyas a demountable rim, viz.,-a rim on which a vehicle tire mayb.-"mounted ready for use and which may* be uickly fitted tothe fixedrim of a wheel y any one of the various well'known 'methods, and whenthe herein described rim is in place on `the wheel, the hinged part m,(the under s'de of which is etupractially flush with the inner surfaceof lthe demountable rim) will be held against but may be made integraltherewith if desired. While the lateral pressure against the rim partsmay be very considerable when the tire is inflated, the pin 0, on whichthe part m swings, does not have to bear this pressure owing,v to# therelative slight angularity of the dovet-ailed ends of the strips al ande, whereby said pressure merely tends to force said hinged part magainst they end of the strip to which it is hinged. For the purpose oflightening the structure, the strips d and e may be cut away, ifdesired, as indicated in Figs; 1 and 2 by s.

Where the word dovetail is used herein it is intended to mean theinterlocking of the rim parts in the manner characteristic of thedovetail lock, and not specifically thevform of dovetail shown anddescribed, since it would be possible, of course, to vary theconfiguration of the spaces cut in 'the rim and the like variation ofthe projections to fit these spaces and still provide an operativeembodiment of the invention.

What I claim, is

1. A rim for clencher and analogous tires circumferentially divided intotwo cylin- `drical parts having the same diameter and movable one towardthe other int interlocking relation,- one of said parts havingdovetailed projections thereon located opposite dovetailed openings inthe other part, and a movable part on said projections to temporarilyreduce the length thereof to per-- mit the entrance of the projectionsin the openings in the other part of the rim when the two parts aremoved one toward the other.- r

2. A rim for clencher and analogous tires 'circumferentially divided,into Vtwo parts, eachrim part having projections on one part extendingtoward openings in the opposite rim part, said openings being normallynarrower than saidprojectio'ns, means to temporarily reduce the lengthof said projections comprising a movable part constituting oneof theends of the projections,

.said part serving, when located flush with the projections, to restoretheir normal outline, said part having a bearing against the base of thetire to lock the part against easy displacement.

3. A rim for clencher and analogous tires circumferentially divided intotwo parts, each rim part having outwardly flaring -UllflliD STATESWPATENT OFFICE.

JOHN CLARENCE COLE, OF CHICOPEE FALLS, MASSACIUSETTS, ASSIGNOR T0 FISKRUBBER lZlOlVIPAN"l 0F CHICOPEE FALLS, MASSACHUSETTS, A CORPORATION.

DEMOUNTABLE RIM.

Patented Oct. 8, 1912.

To all whom 'it may concern.'

Be it known that I, JOHN CLARENCE Conn, a citizen 0f the United Statesof America, residing at Chicopee Falls, in the county of Hampden andState of Massachusetts,

ave invented new and useful Improvements in Demountable Rims, of whichthe following is aspecification.

This invention relates to the construction of metal rims for resilienttires and particularly to demountable rims for clencher and analogoustires in which the bead 011 the base of the tire engages the sides of achannel in the rim. When this type of tires is made in the large sizes,especially, the base and body of the tire are very rigid and the outerdiameter of the rim, measured from the upturned edges thereof, isgreater than the internal diameter of the tire, and the latter, heiligrelatively inelastic, is with dilliculty passed over the edge of the rimand thus seated in the channel in the latter, adapted to receive saidbase. To overcome this, the rims have heretofore been dividedcireuniferentially and the two parts fitted to the beaded sides of thebase and locked together by a suitable locking device.

The object of the present invention is to provide a eircumferentiallyVdivided demountable rim and locking means-to secure the two partstogether, which shall be as light as possible as is consistent withstrength, and iu which the locking device is simple and etlicient, andso constructed that when the rim is provided with its tire and thelatter is inflated for use, the pressure of the base against the rimwill serve to prevent movement of the locking'device, whereby the twoparts of the rim might be blown apart by the air pressure in t-he tire,a result which might be attended with serious results. This automaticlocking of the locking device against easy displacement makes this typeofrim one which can be safely handled with an inflated tire mountedthereon, and one which can be safely carried on a vehicle on any desiredplace.

The invention is clearly illustrated in the accompanying drawings, andfully described in the following specification and pointed out in theclaims appended thereto.

In these draWings,-Figure 1 is a plan view of a portion of a rimembodying the invention, showing the two parts of the rim 1n operativerelation one to the other, the locking device being shown partly in fulllines and partly in dotted lines. Fig'. 2 showsalso in plan view the twolparts of the rim shown in separated relation. Fig. 3 is a crosssectional view of the rim on line 3-3, Fig. l, and shows also a tire inplace on said rim. Fig. 4 is a longitudinal section of the rim and aportion of a tire, the line of the section being taken on the line ofpartition between the two parts of the rim. This view shows the lockingdevice in position to lock the two parts of the rim together. Fig. 5is-a longitudinal section like F ig. t in all respects except that thelocking device is shown in the position it occupies when the rim-partsare unlocked. Figs. t and 5 are on a somewhat smaller scale than Figs. land 2.

Referring tothe drawings. a indicates one part of the circumferentiallydivided rim,

and 7) the other part thereof, the partition line c being preierably solocated as to divide the rim into substantially two equal parts. vOn theparts a. and b, the metal strips fl and e are respectively riveted, asat f on the part a., and g on the part Z). Preferably, the 'strips d,for example, are made longer than the strip e so that there might be,for instance, four relatively long strips (I and four relatively shortones c. Each end of each of the strips o? and c flares outwardly fromits respectivo parts a and b of the rim, these angularly disposed endsbeing straight and are indicated by It. the angles being the same oneachstrip. By referring to Fig. 1, it will be seen that when these two 'rimparts a and are assembled in operative relation, the strips (l and cdovetail together, and to permit this assemblage at those points aroundthe circumference of the rim where the strips on one rim part enterbetween the ends of the strips on the other part, one end of one of thestrips is cut oil and a member is hinged to that end of the strip fromwhich a piece is cut, and is adapted to swing down toward the axis ofthe rim, whereby an opening is provided wide enough to permit thedovetail strip on one rim part to enter between the dovetail ends

